condition mean min max ZT0-3 0.2190065 0.2190065 0.2190065 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.70168 0.70168 0.70168 ZT16-19 0.0 0.0 0.0 ZT20-23 0.261889 0.261889 0.261889